CAT5221WI-50-T1 ON Semiconductor, CAT5221WI-50-T1 Datasheet

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CAT5221WI-50-T1

Manufacturer Part Number
CAT5221WI-50-T1
Description
IC POT DPP 50K 64TAP 20SOIC
Manufacturer
ON Semiconductor
Datasheet

Specifications of CAT5221WI-50-T1

Taps
64
Resistance (ohms)
50K
Number Of Circuits
2
Temperature Coefficient
300 ppm/°C Typical
Memory Type
Non-Volatile
Interface
I²C, 2-Wire Serial
Voltage - Supply
2.5 V ~ 6 V
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
20-SOIC (7.5mm Width)
Resistance In Ohms
50K
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
CAT5221
Dual Digitally Program-
mable Potentiometer (DPPt)
with 64 Taps and I
Interface
Description
(DPPst) integrated with control logic and 16 bytes of NVRAM
memory. Each DPP consists of a series of 63 resistive elements
connected between two externally accessible end points. The tap
points between each resistive element are connected to the wiper
outputs with CMOS switches. A separate 6−bit control register (WCR)
independently controls the wiper tap switches for each DPP.
Associated with each wiper control register are four 6−bit non−volatile
memory data registers (DR) used for storing up to four wiper settings.
Writing to the wiper control register or any of the non−volatile data
registers is via a I
data register (DR0) for each of the four potentiometers is
automatically loaded into its respective wiper control register (WCR).
variable resistor. It is intended for circuit level or system level
adjustments in a wide variety of applications.
Features
© Semiconductor Components Industries, LLC, 2010
December, 2010 − Rev. 12
The CAT5221 is two Digitally Programmable Potentiometers
The CAT5221 can be used as a potentiometer or as a two terminal,
Potentiometer
Compliant
Two Linear−taper Digitally Programmable Potentiometers
64 Resistor Taps per Potentiometer
End to End Resistance 2.5 kW, 10 kW, 50 kW or 100 kW
Potentiometer Control and Memory Access via I
Low Wiper Resistance, Typically 80 W
Nonvolatile Memory Storage for Up to Four Wiper Settings for Each
Automatic Recall of Saved Wiper Settings at Power Up
2.5 to 6.0 Volt Operation
Standby Current less than 1 mA
1,000,000 Nonvolatile WRITE Cycles
100 Year Nonvolatile Memory Data Retention
20−lead SOIC and TSSOP Packages
Industrial Temperature Range
These Devices are Pb−Free, Halogen Free/BFR Free and are RoHS
2
C serial bus. On power−up, the contents of the first
2
C
2
C Interface
1
See detailed ordering and shipping information in the package
dimensions section on page 16 of this data sheet.
GND
SDA
R
R
R
R
R
R
W0
A0
A2
W1
H0
H1
L0
L1
ORDERING INFORMATION
PIN CONNECTIONS
http://onsemi.com
TSSOP−20 (Y)
CASE 948AQ
CASE 751BJ
SOIC−20 (W)
TSSOP−20
W SUFFIX
(Top View)
Y SUFFIX
SOIC−20
CAT5221
1
Publication Order Number:
CAT5221/D
V
NC
NC
NC
A1
A3
SCL
NC
NC
NC
CC

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CAT5221WI-50-T1 Summary of contents

Page 1

CAT5221 Dual Digitally Program- mable Potentiometer (DPPt) with 64 Taps and I Interface Description The CAT5221 is two Digitally Programmable Potentiometers (DPPst) integrated with control logic and 16 bytes of NVRAM memory. Each DPP consists of a series of 63 ...

Page 2

L3B CAT5221WT −RRYMXXXX L = Assembly Location 3 = Lead Finish − Matte−Tin B = Product Revision (Fixed as “B”) CAT = Fixed a “CAT” 5221W = Device Code T = Temperature Range I = Industrial A = Automobile ...

Page 3

Table 1. PIN DESCRIPTION Pin (SOIC) Name 1 R Wiper Terminal for Potentiometer Low Reference Terminal for Potentiometer High Reference Terminal for Potentiometer Device Address, LSB 5 A2 ...

Page 4

Table 2. ABSOLUTE MAXIMUM RATINGS Temperature Under Bias Storage Temperature Voltage on any Pin with Respect with Respect to Ground CC Package Power Dissipation Capability (T Lead Soldering Temperature (10 s) Wiper Current Stresses exceeding Maximum ...

Page 5

Table 5. D.C. OPERATING CHARACTERISTICS Symbol Parameter I Power Supply Current CC I Standby Current ( Input Leakage Current LI I Output Leakage Current LO V Input Low Voltage IL V Input High Voltage ...

Page 6

Table 10. RELIABILITY CHARACTERISTICS Symbol Parameter NEND (Note 9) Endurance TDR (Note 9) Data Retention VZAP (Note 9) ESD Susceptibility ILTH (Notes 9, 10) Latch−Up 9. This parameter is tested initially and after a design or process change that affects ...

Page 7

Serial Bus Protocol The following defines the features of the I 1. Data transfer may be initiated only when the bus is not busy. 2. During a data transfer, the data line must remain stable whenever the clock line is ...

Page 8

Write Operation In the Write mode, the Master device sends the START condition and the slave address information to the Slave device. After the Slave generates an acknowledge, the Master sends the instruction byte that defines the requested operation of ...

Page 9

Instructions and Register Description INSTRUCTIONS Slave Address Byte The first byte sent to the CAT5221 from the master/ processor is called the Slave/DPP Address Byte. The most significant four bits of the slave address are a device type identifier. These ...

Page 10

Wiper Control and Data Registers Wiper Control Register (WCR) The CAT5221 contains two 6−bit Wiper Control Registers, one for each potentiometer. The Wiper Control Register output is decoded to select one of 64 switches along its resistor array. The contents ...

Page 11

The basic sequence of the three byte instructions is illustrated in Figure 11. These three−byte instructions exchange data between the WCR and one of the Data Registers. The WCR controls the position of the wiper. The response of the wiper ...

Page 12

INC/DEC Command Issued SCL SDA R W Figure 13. Increment/Decrement Timing Limits Instruction Format Table 13. READ WIPER CONTROL REGISTER (WCR) S DEVICE ADDRESSES Table 14. WRITE WIPER ...

Page 13

Table 17. GLOBAL TRANSFER DATA REGISTER (DR) TO WIPER CONTROL REGISTER (WCR) S DEVICE ADDRESSES Table 18. GLOBAL TRANSFER WIPER CONTROL REGISTER (WCR) TO DATA REGISTER (DR) S DEVICE ADDRESSES ...

Page 14

PIN#1 IDENTIFICATION TOP VIEW D A SIDE VIEW Notes: (1) All dimensions are in millimeters. Angles in degrees. (2) Complies with JEDEC MS-013. PACKAGE DIMENSIONS SOIC−20, 300 mils CASE 751BJ−01 ISSUE O SYMBOL ...

Page 15

TOP VIEW D A2 SIDE VIEW Notes: (1) All dimensions are in millimeters. Angles in degrees. (2) Complies with JEDEC MO-153. PACKAGE DIMENSIONS TSSOP20, 4.4x6.5 CASE 948AQ−01 ISSUE θ1 A1 http://onsemi.com 15 SYMBOL MIN ...

Page 16

... The standard lead finish is Matte−Tin. 13. The device used in the above example is a CAT5221WI−10−T1 (SOIC, Industrial Temperature, 10 kW, Tape & Reel, 1,000/Reel). 14. For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging Specifications Brochure, BRD8011/D ...

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